Arc welding tool



March 19, 1929. v M. WELLS ARC WELDING TOOL Filed Aug. 16, 1927 Patented Mar. 19, 1929.

UNITED STATES MARTIN WELLS, 03' LOS ANGELES, CALIFORNIA. v

ABC WELDING TOOL.

Application and August 16. 1927. Serial no. 213,340.

The invention relates to arc welding tools for gripping and holding a wire and has for its object to provide a device of this character wherein the use of springs WhlClllOOSG their tension, incident to heat, are eliminated, the wire positively held and clamped in the crown and means whereby a conductor wire is positively clamped and held at all times, thereby insuring positive connections, consequently obviating the heating, particularly of the bandle, and reducing the heating of the tool as a whole to a minimum.

A further object is to form the handle member from a plurality of spaced annular members preferably formed from fibre, and which annular members are spaced apart by means of spacing washers, through which washers and annular members holding bolts extend. The spaced washers form means whereby a circulation of air may pass through the handle, thereby maintaining the handle relatively cool at all times. Also to extend the conductor wire through the spaced annular washers whereby the circulation of air will also be around the conductor wire.

A further object is to provide one end of the handle member with a chambered member into which the conductor wire extends, a transverse bar across said chambered member and provided with a set screw for positively clamping the conductor wire against the bot: tom of the chambered member. Also to provide the chambered member with a flange engaging the adjacent end of the handle and through which flange the handle securing bolts extend.

A further object is to provide the chambered member with a threaded shaft on which is threaded a sleeve and which shaft terminates in a forwardly extending shaft adapted to be forced into close binding engagement with a wire extending through the crown of the tool and eliminating the use of springs.

A further object is to provide the crown with an annular chambered member of greater interior diameter than the sleeve, and which annular member is secured to the sleeve at spaced points, thereby forming discharge recesses around the sleeve through which accumulated dirt and other foreign matter may be discharged from the crown, consequently prevented from entering the thread of the sleeve and shaft.

With the above and other objects in view shown in the drawing, described and claimed, it being understood that changes in the precise embodiment of the invention may be made within the scope of what isclaimed without departing from the spirit of the invention.

In the drawing:

Figure l is a side elevation of the tool.

Figure 2 is a vertical longitudinal sectional view through the tool.

Figure 3 is a rear end view of the handle member. 1

Figure 4 is a vertical transverse sectional view through the handle member taken on line ai4 of Figure 1.

Figure 5 is a vertical transverse sectional view taken on line 5-5 of Figure 2.

Figure 6 is a vertical transverse sectional view taken on line (3-43 of Figure 2.

eferring to the drawing the numeral 1 designates a chambered member preferably formed from a tubular piece of material and having its upper side 2 cut away. Extending across the upper cut away portion 2 of the chambered member 1 is a bar 3-, through which is threaded a set screw 4, and which set screw extends downwardly into the chambered member and is. adapted to positively clamp the conductor wire 5 against the chambered memberat 6, thereby insuring a positive connection at all times, consequently reducing the possibilities of heating, incident to a loose connection, to a minimum. The rear end of the chambered member 1 is provided with an annular flange 7 to which is bolted by means of bolts 8 a handle member 9. The handle member 9 is formed from a plurality of spaced annular members 10, and which annular members .are maintained in spaced relation by means of washers 11 interposed therebetween, and through which washers as well asthe annular members, the bolts 8 extend. By forming the handle member from a plurality of spaced members, it is obvious a circulation of air may pass through the handle member at all times, thereby preventing the heating of the handle at all times. The conductor wire extends through the handle member and its spaced members 10 axially and is preferably smaller than the inside diameters of the spaced members 11, thereby allowing a. current of air to pass longitudinally through the handle member to or from the chambered member 1, and further preventing heating of the device. The spaced members 10,-as well as the spacin washers 11 are preferably formed from brous material which is also I which ing device is an insulator, however it is to be understood that other material may be used if desired.

Formed integral with the forward end of the chambered member 1 is a shaft 12, which shaft is preferably provided with relatively coarse square thread 13, and the shaft forwardly of the thread 13 terminates in a forwardly extending ortion 14 which is slidably mounted in a caring 15 of a crown 16. The crown16 is provided with diverging eyes 17 through which the wire 18 extends at a right angle to the shaft 14, therefore it will be seen that when the shaft 14 is forced forwardly towards the wire 18, said wire will be securely and positively clamped in the eyes 17, thereby insuring a positive contact at all times, and also by providing a positive contact reduces heating to a minimum. Threaded on the shaft 12 is a sleeve 19, and which sleeve is connected to the crown member 16 by means of an enlarged chambered member 20. The chambered member 20 extends slightly over the adjacent end of the sleeve 19 and is spaced therefrom but connected thereto by welding or otherwise at 21, thereby forming passages 22 around the sleeve 19, through assages dirt or other foreign matter, WlllCh may collect in the chambered member and adjacent parts may be easily dis,-

char ed therefrom, thereby preventing the dirt from accumulating in the thread 13 and threaded sleeve 19, consequently the device is maintained free of dirt at all times.

From the above it will be seen that a weldrovided for holding a wire, which device is simple in construction, and provided with 'a' handle through which air may easily circulate for maintaining the bandle cool at all times. It will also be seen that the contacts are positive, will not work loose, and the use of spring contacts or springs of any kind is obviated, thereby obviating difficulty incident to poor contacts, which is a difficulty now experienced with devices of this character wherein springs are used, and which springs lose their tension incident to heat. 7

The invention having been set forth what is claimed as new and useful is 1. A welding tool comprising a wire holding member, a handle member carried by the wire holding member, said handle member Washers between sai bein formed from a plurality of spaced mem ers, a conductor wire extending through said spaced members, said spaced members forming air passages through which air may circulate longitudinally and transversely through the handle.

2. The combination with a wire holding tool of the character described, of a handle member, said handle member being formed from a plurality of s aced annular members, annular members and bolts extending through said annular members and washers.

3. The combination with a wire holding tool of the character described, of a handle for said tool, said handle being formed from a plurality of spaced annular members through which a conductor extends, spacing members between the annular members, and bolts extending through said spacing members and annular members and forming means for holding said spacin members and annular members together and also for holding the handle member to the tool.

4. A welding wire holding tool comprising a chambered member having one side thereof open, a bar extending across said chambered members, a set screw threaded through said bar, an annular flange carried by one end of said chambered member, a handle connected to said annular flange, said handle being formed from a pluralit of spaced annular members, a threaded siaft carried by the other end of the chan'ibered member, a sleeve threaded on said shaft, a crown connected to said sleeve and having a plurality of passages around the sleeve, gripping cycs carried by the crown, and a shaft carried by the threaded shaft and cooperating with the crown.

5. The combination with a welding tool of the character described and having a thread ed wire clamping shaft cooperating with a crown, a sleeve threaded on said shaft, of a dirt collecting and discharging device, said device comprising a sleeve carried by the crown and into which the first mentioned sleeve extends in spaced relation and spaced connections between the crown carried sleeve and the sleeve threaded on the shaft.

In testimony whereof I hereunto affix my signature.

MARTIN WELLS. 

